37
Settings
6.7
∆
T R1
Switch-on/switch-off temperature difference for relay R1
If this temperature difference between the reference sensors is exceeded and the
other conditions are also met, then the controller switches the relay R1 on.
When the temperature drops to
Δ
T Off, then R1 is switched off.
Settings range:
Δ
T from 4°C to 20°C /
Δ
TOff from 2°C to 19°C
Settings range:
Δ
T 10°C /
Δ
T off 3°C.
If the set temperature difference is too small, this may result in ineffec-
tive operation, depending on the system and sensor positions.
Special switching conditions apply for speed control (see 7.9)!
Caution
6.8
∆
T R2
6.9
∆
T R3
Switch-on/Switch-off temperature difference for relay R2
If this temperature difference between the reference sensors is exceeded and the
other conditions are also met, then the controller switches the pump and/or the valve
on.
When the temperature drops to
Δ
T Off, then R2 is switched off.
Settings range:
Δ
T from 4°C to 20°C /
Δ
TOff from 2°C to 19°C
Settings range:
Δ
T 10°C /
Δ
T off 3°C.
Switch-on/Switch-off temperature difference for relay R3
If this temperature difference between the reference sensors is exceeded and the
other conditions are also met, then the controller switches the pump and/or the valve
on.
When the temperature drops to
Δ
T Off, then R3 is switched off.
Settings range:
Δ
T from 4°C to 20°C /
Δ
TOff from 2°C to 19°C
Settings range:
Δ
T 10°C /
Δ
T off 3°C.
Setting the temperature difference too small may lead to ineffective operation
of the system and to frequent switching of the pump, depending on the system
and sensor positions.
Setting the temperature difference too small may lead to ineffective operation
of the system and to frequent switching of the pump, depending on the system
and sensor positions.
Caution
Caution
